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Location sound — live

20 years on set · Venezuela · Dominican Republic

International-standard dialogue capture, ready for any location in the world.

Location sound operation, technical setup, equipment rental and RF coordination, backed by two decades of real productions: from telenovelas and documentaries to reality formats for networks in five countries.

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  • Exatlón — Telemundo
  • Survivor — Azteca Uno / Pro TV
  • La Isla: Desafío Extremo
  • Hotel Paradise
  • Coma Profundo
  • Milly: Reina del Merengue
  • Pedregal: A La Hora Exacta
  • Cazatesoros
  • Día Ocho
  • La Tercera Edad
  • El Pico Duarte
  • La 42

Behind the team

On-set experience behind every service.

C Direct Sound Rental grew out of the career of Felix Castillo, a sound mixer and RF technician trained by Shure in ADX5D configuration and wireless system coordination, with two decades of productions: from telenovelas and live shows in Caracas to international reality formats shot outdoors in extreme conditions. That field experience guides every technical decision: when we run the sound, when we set up your system and when we prep the gear you rent.

  • Dante Level 1 Certified
  • Shure ADX5D
  • Shure Wireless Systems
  • Dante Level 1 (2nd Edition) certificate issued by Audinate to Felix Castillo

    Dante Level 1
    2nd Edition · ID d95c-a890-84f4-d8c4 · 2026

  • Shure ADX5D: Setup and Use certificate, issued to Felix Castillo

    Shure ADX5D
    Setup and use · Aug 2024

  • Shure Master Class: Wireless Best Practices and Techniques certificate, issued to Felix Castillo

    Shure Master Class
    Wireless best practices and techniques · Feb 2025

  • Radio Frequency Technician course certificate from León Sonido Virtual, issued to Félix Eduardo Castillo Mata

    Radio Frequency Technician
    León Sonido Virtual · 7 h · Jan 2022

About the company
Years in location sound, since 2005
20+
Countries' versions of Exatlón and Survivor, shot in the DR
5
ADX5D and wireless systems certification
Shure
Registration AC-PTA 11580
Sirecine

In the field

Real work, on set.

Exterior shoots, on water, in the mountains or at remote locations: where location sound is earned, not improvised.

Felix Castillo holding the boom pole overhead on an interior set
Interior boom: the pole follows the action just outside the frame. Photo: @fernandogermannc.
Felix Castillo with the boom pole fully extended and a microphone with a windshield at a racetrack
Boom pole at full extension to cover an open scene at a racetrack.
Felix Castillo with headphones and a sound bag checking the recording inside a hot-air balloon basket
Recording from a hot-air balloon — La Isla: Desafío Extremo.
Felix Castillo holding the boom pole over a balcony while the camera operator films a fiction scene
Boom on a fiction shoot, coordinated with camera and cinematography.
Felix Castillo seated with the sound bag, multitrack mixer-recorder and wireless receivers
Sound bag with a multitrack mixer-recorder and receivers outdoors.
Felix Castillo with headphones and the boom pole on his shoulder next to the La Pelona sign, at 3,085 meters
El Pico Duarte documentary: shooting at La Pelona, 3,085 m above sea level.

Services

Operation, technical setup, rental and consulting.

We run the sound on your shoot, set up and configure systems with your gear or ours, rent equipment prepped for set and advise you on technical choices. Each service can be hired on its own or as a single system.

See all services

RF Lab

We measure before we reach your set.

Before every shoot we scan the location's spectrum, work out a compatible frequency plan for everything that transmits on set and check it with the equipment switched on. During the day we keep watching it.

UHF band monitored
470–900 MHz
Coordination per location
RF

Measurements and walk tests: coming soon

Live spectrum — RF coordination monitoring

How we handle RF

  1. 01

    Scan

    We measure which TV channels and other signals occupy the UHF band at the location, first with all equipment off and then on.

    • TXAdvance + SDR receiver
    • Receiver scan
  2. 02

    Coordination

    We load the scan and the list of everything that transmits (mics, in-ears, IFB) and calculate frequencies free of 3rd- and 5th-order intermodulation, with backups.

    • Wireless Workbench
    • SoundBase
  3. 03

    Walk test

    We walk the location with each transmitter on while listening to the receiver: dead spots show up before they show up in a take.

  4. 04

    Monitoring

    We watch the spectrum throughout the day and switch to an already-checked backup frequency if a channel gets dirty.

    • TXAdvance
    • Receiver scan
Scanning with TXAdvance and an SDR receiver, and the result in the bag: antenna distribution and receivers on their assigned frequencies.
TXAdvance screenshot with the 470 to 588 MHz scan in Greece and the list of lavaliers with their frequencies
Location scan in Greece (La Isla, 2024): occupied TV channels and assigned frequencies.
TXAdvance screenshot with a narrow scan around 502 MHz and one frequency marked
Checking a single frequency before assigning it to a transmitter.

TXAdvance screenshots and video, published with its developer's permission: compasseur.com

How a frequency plan is built

Portfolio

Productions where sound was never the problem.

Real cases: the technical challenge, the solution and the sound team's role.

  • International reality

    Exatlón and Survivor for networks in five countries

    Wireless coordination and mixing in the Dominican Republic's extreme outdoor conditions, with no studio or environmental control, for the United States, Mexico, Hungary, Slovenia and Romania versions.

    Sound Mixer · Acunmedya · Exatlón USA (Telemundo), Mexico (Azteca Uno), Hungary (TV2), Slovenia (TvPlanet) and Survivor Romania (Pro TV / Kanal D) · 2018–2026

  • Feature film

    Coma Profundo and Milly, Dominican fiction

    Boom dialogue coverage on a fiction set with multiple locations and audio continuity between scenes.

    Boom Operator · Sonoro Post House and Línea Espiral · 2022

  • Documentary

    El Pico Duarte, sound in mountain terrain

    Dialogue and ambience capture at altitude and in changing weather, with no chance to repeat a take.

    Sound Mixer · Monte Sereno Films · 2023–2024

See full portfolio

Selected credits

Filmography in the Dominican Republic.

Feature films, documentaries and TV formats with location sound credits.

Feature films

  • Coma ProfundoBoom Operator
  • CazatesorosSound team
  • Día OchoEffeta Films
  • La Tercera EdadSound Utility
  • Milly: Reina del MerengueBoom Operator
  • Pedregal: A La Hora ExactaBoom Operator

Documentaries

  • El Pico DuarteSound Mixer
  • La 42Boom Operator · SXSW

TV formats

  • Exatlón Estados UnidosTelemundo
  • Exatlón MéxicoTV Azteca
  • La Isla: Desafío ExtremoTelemundo · Turkey and Greece
  • Hotel ParadiseSound system setup

Technical library

Learn location sound from people who do it on set.

Technical guides on wireless systems, RF, microphones and recorders, with our own diagrams and manufacturer sources. Open to anyone who wants to understand how sound is recorded on a shoot.

  • Wireless and RF
  • Microphones
  • Recording
Enter the library

Tell us what you're shooting. We'll coordinate the rest.

We'll get back to you with availability, recommended equipment and a quote.

Request a quote